Finding the Fourth Proportional to 911,017.47, 1,257,182.60 and 503,111.19

Step by Step Solution

1. Step 1: Write the proportion equation
   911,017.47 : 1,257,182.60 = 503,111.19 : x
2. Step 2: Convert to fraction form
   911,017.47/1,257,182.60 = 503,111.19/x
3. Step 3: Cross multiply
   911,017.47x = 1,257,182.60 × 503,111.19
4. Step 4: Simplify right side
   911,017.47x = 632,502,631,417.74
5. Step 5: Solve for x
   x = 632,502,631,417.74/911,017.47
6. Step 6: Final answer
   x = 694,281.56